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You need to hook to both batteries, one battery use the negative, the other battery use the positive post for the charger. Since batteries are in parallel this will run the charge equally through both.
You need to hook to both batteries, one battery use the negative, the other battery use the positive post for the charger. Since batteries are in parallel this will run the charge equally through both.
That doesn't seem to make sense to me, since both batteries share a common ground and both positive connections are in parallel. Hooking up to one battery should suffice to charge both batteries, equally and simultaneously.
My advice would be to make sure that the cables and terminals on both batteries are clean and tight, and ground cables from both batteries to body/frame are solid and clean. Then you've ensured that you have a solid circuit for charging.
I connect my CTEK MUS 4.3 to the passenger side, but only because it's closest to the wall where the charger is. That battery will get charged first but the driver side isn't far behind. I see a .1 volt difference between the two batteries when the charger is first connected. That difference is gone by the time the charger indicators say that the system is charged.
We often experience below zero temperatures and sometimes do not use my truck for up to 3 weeks at a time.
Should I buy a 2, 5, or 7 amp tender/charger?
We often experience below zero temperatures and sometimes do not use my truck for up to 3 weeks at a time.
Should I buy a 2, 5, or 7 amp tender/charger?
For that length of time you don't need the higher current. 2 amp should do just fine. It helps if the charger has a low temperature option as it will increase the charge voltage.
This is a good read for understanding low temperature charging.
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